It looks like a spilo

Arripis truttaceus? Arius thalassinus? Neoarius midgleyi?

Many species are moving south due to climate change currents

Chemi pure The power of carbon and macropourous resin combined!

For an experienced cichlid breeder, buying 2cm fish is almost no risk at all IF they are netted and transported well. That said the above posts are perhaps the ethical way of looking at it. Many times I have bought 50 little 1cm fry from other breeders to then raise up myself.....  but they would never advertise them for sale at that size and would be horrified if I mentioned their name in this post!

Another option is to use facebook for image storage. The theory being they are too big to fail :/

Its the same chemical, brand means little in cases of chemistry. While some snails may be able to survive by sealing up and hiding in the gravel, most will not.

Well copper sulphate at 1g per 1000L works dam well. We sell it under the blue planet brand "snail rid". But yea, no good for shrimp, so water change after treatment before adding them back in. SOme plants dont like it, found elodea to be very sensitive.

Reminds me of using Vit B to fertilize phytoplankton blooms.

The trick is in the fact that people dont actually know which microbes are flourishing in their filtration Lotta guessing going on.

I'd expect it to be bacterial, flexabacta infections are super common with wild caught fish like this. Its generally related to the increase in temperature from the wild to the aquarium. Very easy for slight handling damage to get infected. Temperature below 24 degrees C is the most important part of treatment IMHO.

Why bother with ammonia when its more effective to just use fish food?

*You dont need exact amounts of ammonia to cycle, just feed the tank the amount of fish food you would like to be able to feed your first batch of fish.

*At the end of cycling you then have a container of fish food to use, rather than a useless bottle of ammonia.

*Ammonia comes from protein, so the higher the protein content of fish food the more ammonia it produces.

*Just as important as the ammonia eaters, are the rotters, that break down protein into ammonia. Adding ammonia skips out the rotters, resulting in a less robust biofiltration colony.

*You will be growing microbes that specialise in handling the exact food you are feeding.

*Theres other stuff in there that feeds other microbes, things we dont test for but are also important that we build up microbes for.

Looks like columnaris, so bacterial. Something like wardley fungus-ade should do the trick nicely. Keeping temperature at or below 24degreesC is key to curing it before it kills the fish.

Pretty much every lfs over here on the east side sells fish that are either coming in from wholesaler loaded with astax, or the lfs is feeding them astax foods in store. Cant remember the last time I saw a sign pointing it out but it was likely 10 years ago or so.

That is so awesome

"BLUE ZEBRA' Is about as close to an ID as I would give, pindani kinda expect black dorsal trim.

The one on left with less dots looks like a synodontis ocellifer.

Earthworms for bait is how we were getting them at Clarrie hall dam on the east side

How big were the ones you line caught?

Up to 30cm

As above a nitrite spike can do damage in the time it takes the biofiltration to convert it away. Its the perfect crime. Theres not much you can do, other than wait for the fishes body to excrete it. The problem is now not the nitrite in the aquariums water, but the nitrite in the fishes blood.

Testing the tapwater before you start on water changes can save the day here, likely this was the source of the nitrite spike. 

Adding salt slows nitrite getting into the fish, but does not get it out of the fish.

Nitrite poisoning symptoms ~ lethargy, gasping, bright colours.

While its just attacking the blood, once clots start forming propper you get random death spirals as they stroke out.

Its a terrible thing to watch

Primes main duty is to remove the chlorine. I never do more than a 50% change as a sorta insurance to insulate me from throwing out chemistry too much.

Dont let this ruin the hobby for you.

Sometimes the cookie crumbles in a really sucky way

Get the filter outlets rippling the water surface as much as possible. Sounds like you have refilled high and dont have the same water agitation you had before the water change.

You added dechlorinator chemical yea?

If so, get some water agitation going! Even if you have to drop some water out.

Thats a nitrite spike. I dont know where you got the 0ppm nitrite reading you posted, but its wrong.

99% sure

Any xenia is enough xenia XD

Plenty of coral gobies in the hobby

Such great fish, much love for the sly foxes over here